Question 1

What are the major sites of glycogen storage in the human body?

Accepted Answer

A)  fat and pancreas
B)  liver and muscle
C)  stomach and intestines
D)  kidneys and stomach
E)  heart and brainF) B) and D)
G) A) and B)

Question 2

The Fischer projection for the naturally occurring form of fucose,one of the carbohydrates used as a cell marker in the determination of blood types,is shown below.Is this D-fucose or L-fucose?

Accepted Answer

A)  D-fucose
B)  L-fucose
C)  It is neither D- nor L-; fucose is not chiral.
D)  It is impossible to determine from the Fischer projection alone.E) B) and C)
F) A) and D)

Question 3

What is the stereochemical relationship between your right and left hands?

Accepted Answer

A)  cis- and trans- isomers
B)  structural isomers
C)  conformers
D)  enantiomers
E)  diastereomersF) B) and E)
G) A) and B)

Question 4

What is the name of the simplest ketose?

Accepted Answer

A)  acetone
B)  fructose
C)  ethanone
D)  1,3-dihydroxyacetone
E)  ethoseF) D) and E)
G) None of the above

Question 5

Which of the following may be used as a strategy in learning biochemistry?

Accepted Answer

A)  recognize that the roots in various terms are unrelated and do not follow a pattern
B)  memorize each new reaction because biological molecules react differently than organic molecules
C)  begin each chapter by memorizing the names of the enzymes along with their substrates and products
D)  focus on each detail before reviewing how they relate to an overall process
E)  understand the big concepts before mastering the detailsF) B) and D)
G) B) and C)

Question 6

Gentobiose,a rare disaccharide found in saffron,produces two identical monosaccharides when it undergoes hydrolysis.What is the structure of the monosaccharide hydrolysis product?

Accepted Answer

A)  
B)  
C)  
D)  
E)  None of these are correct.F) A) and B)
G) A) and E)

Question 7

Which of the following is the major storage molecule of glucose in animals?

Accepted Answer

A)  cellulose
B)  sucrose
C)  blood sugar
D)  amylose
E)  glycogenF) A) and E)
G) B) and E)

Question 8

If left untreated,galactosemia leads to mental retardation.

Accepted Answer

A) True 
 B)False

Question 9

What is the principal carbohydrate found in milk?

Accepted Answer

A)  glucose
B)  maltose
C)  mannose
D)  lactose
E)  sucroseF) A) and D)
G) D) and E)

Question 10

Which enantiomer of glyceraldehyde is represented in the following structure?

Accepted Answer

A)  L-glyceraldehyde
B)  α-glyceraldehyde
C)  β-glyceraldehyde
D)  D-glyceraldehyde
E)  It is impossible to determine from the structure alone.F) A) and D)
G) A) and C)

Question 11

How do the structures of amylose and cellulose differ?

Accepted Answer

A)  Amylose is a linear polysaccharide and cellulose is a branched polysaccharide.
B)  Amylose is a homopolysaccharide and cellulose is a heteropolysaccharide.
C)  Amylose is a polysaccharide of glucose units,and cellulose is a polysaccharide of galactose units.
D)  Amylose is a polysaccharide made up of D-glucose units,and cellulose is a polysaccharide made up of L-glucose units.
E)  Amylose contains α(1→4) glycosidic bonds joining D-glucose units,and cellulose contains β(1→4) glycosidic bonds joining D-glucose units.F) B) and C)
G) None of the above

Question 12

What is the position of the -OH group on carbon-1 in the Haworth projection of β-D-glucose?

Accepted Answer

A)  above the ring
B)  below the ring
C)  in the plane of the ring
D)  to the left of carbon-1
E)  to the right of carbon-1F) B) and C)
G) A) and E)

Question 13

Which of the following is NOT a carbohydrate?

Accepted Answer

A)  sucrose
B)  simple sugar
C)  fatty acid
D)  cellulose
E)  starchF) A) and D)
G) C) and D)

Question 14

Melibiose is a carbohydrate found in some plant juices.Which of the following statements concerning melibiose is INCORRECT?

Accepted Answer

A)  It is a disaccharide.
B)  It is composed of two different monosaccharide units.
C)  It contains both an acetal and a hemiacetal.
D)  It contains an α(1→5) glycosidic linkage.
E)  It is a reducing sugar.F) C) and D)
G) A) and E)

Question 15

Which of the following is NOT a term that would properly describe glucose as it is shown below?

Accepted Answer

A)  monosaccharide
B)  aldose
C)  hemiacetal
D)  D-sugar
E)  reducing sugarF) A) and E)
G) A) and C)

Question 16

Which form of D-glucose has the -OH group on carbon-1 below the ring in the Haworth projection?

Accepted Answer

A)  meso
B)  L
C)  α
D)  β
E)  γF) None of the above
G) A) and B)

Question 17

What heteropolysaccharide is a component of cartilage and may relieve symptoms of osteoarthritis?

Accepted Answer

A)  chondroitin sulfate
B)  hyaluronic acid
C)  heparin
D)  glycogen
E)  α-D-glucuronateF) C) and D)
G) A) and E)

Question 18

To what class of carbonyl-containing compounds does glucose belong?

Accepted Answer

A)  aldehyde
B)  ketone
C)  alcohol
D)  amide
E)  Both aldehyde and ketone are correct.F) All of the above
G) None of the above

Question 19

What type of glycosidic linkage between glucose units is present in cellulose?

Accepted Answer

A)  α(1→4) 
B)  β(1→4) 
C)  α(1→6) 
D)  β(1→6) 
E)  α(1→4) and α(1→6) F) C) and D)
G) A) and B)

Question 20

Enantiomers are related as non-superimposable mirror images.

Accepted Answer

A) True 
 B)False

Exam 16: Carbohydrates

What is the position of the -OH group on carbon-1 in the Haworth projection of β-D-glucose?

Correct AnswerverifiedShow Answer

If left untreated,galactosemia leads to mental retardation.

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What type of glycosidic linkage between glucose units is present in cellulose?

Correct AnswerverifiedShow Answer

The Fischer projection for the naturally occurring form of fucose,one of the carbohydrates used as a cell marker in the determination of blood types,is shown below.Is this D-fucose or L-fucose?

Correct AnswerverifiedShow Answer

Which of the following is the major storage molecule of glucose in animals?

Correct AnswerverifiedShow Answer

Which of the following may be used as a strategy in learning biochemistry?

Correct AnswerverifiedShow Answer

Which enantiomer of glyceraldehyde is represented in the following structure?

Correct AnswerverifiedShow Answer

Which of the following is NOT a carbohydrate?

Correct AnswerverifiedShow Answer

Melibiose is a carbohydrate found in some plant juices.Which of the following statements concerning melibiose is INCORRECT?

Correct AnswerverifiedShow Answer

Which form of D-glucose has the -OH group on carbon-1 below the ring in the Haworth projection?

Correct AnswerverifiedShow Answer

What heteropolysaccharide is a component of cartilage and may relieve symptoms of osteoarthritis?

Correct AnswerverifiedShow Answer

What is the name of the simplest ketose?

Correct AnswerverifiedShow Answer

What is the principal carbohydrate found in milk?

Correct AnswerverifiedShow Answer

Enantiomers are related as non-superimposable mirror images.

Correct AnswerverifiedShow Answer

What is the stereochemical relationship between your right and left hands?

Correct AnswerverifiedShow Answer

How do the structures of amylose and cellulose differ?

Correct AnswerverifiedShow Answer

Which of the following is NOT a term that would properly describe glucose as it is shown below?

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What are the major sites of glycogen storage in the human body?

Correct AnswerverifiedShow Answer

To what class of carbonyl-containing compounds does glucose belong?

Correct AnswerverifiedShow Answer

Gentobiose,a rare disaccharide found in saffron,produces two identical monosaccharides when it undergoes hydrolysis.What is the structure of the monosaccharide hydrolysis product?

Correct AnswerverifiedShow Answer

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